How to translate multiple parameters to a PHP conditional if statement

Question

Let's say I have the following url: example.php?grab=1,3&something=...

grab has two values, how can I translate that to a conditional if statement. For example, if count is a variable and you want to calculate if count is equal to one of the grab values.

$grab = $_GET["grab"];

$count = 4;

if($count == $grab(values)) {
alert("True");
}

explode your grab parameter and use in_array or use strpos and check for !== false (meaning it's in there) — Memor-X
– Memor-X, Commented Sep 7, 2016 at 2:12

Kevin · Accepted Answer · 2016-09-07 02:11:06Z

2

If its always going to be , that glues the values, just explode them, that turns them into an array. Then just use your resident array functions to check. In this example, in_array:

if(!empty($_GET['grab'])) {
    $grab = $_GET["grab"];
    $count = 4;
    $pieces = explode(',', $grab);
    if(in_array($count, $pieces)) {
        // do something here if found
    }
}

Sidenote: If you try to devise your url to be like this:

example.php?grab[]=1&grab[]=3&something

You wouldn't need to explode it at all. You can just get the values, and straight up use in_array.

The example above grab already returns it an array:

if(!empty($_GET['grab'])) {
    $grab = $_GET["grab"];
    $count = 4;
    if(in_array($count, $grab)) {
        // do something here if found
    }
}

answered Sep 7, 2016 at 2:11

Kevin

41.9k12 gold badges57 silver badges72 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

designcise · Accepted Answer · 2016-09-07 02:27:17Z

0

Method#1: Reformat URL and Use PHP in_array()

Why not reformat your url to something like this: example.php?grab[]=1&grab[]=3&something=... which automatically returns the grab value as an array in PHP?

And then do something like:

if(isset($_GET['grab']) && in_array(4, $_GET['grab'])) {
    // do something
}

Method#2: Split String into Array and Use PHP in_array()

If you do not wish to reformat your url, then simply split the string into an array using php's explode function and check if value exists, for example:

if(isset($_GET['grab'])) {
    $grab_array = explode(",", $_GET['grab'])
    if(in_array(4, $grab_array)) {
        // do something
    }
}

Method#3: Use Regular Expressions

You could also use regular expressions to check for a match.

edited Sep 7, 2016 at 2:27

answered Sep 7, 2016 at 2:20

designcise

4,4101 gold badge22 silver badges19 bronze badges

Collectives™ on Stack Overflow

How to translate multiple parameters to a PHP conditional if statement

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related